Seiko Cal. 6644 - 383

This Spring Drive model from 1980 features a 45mm Gold-Plated case. With its 20mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-789cb0a1ef8e]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1980

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